Received: 5 February 2022
Accepted: 8 August 2022
First Online: 20 August 2022
: The data analysis for this publication was approved by the “Ethics Commission of Upper Austria” for the Red Cross of Upper Austria. Written informed consent was obtained from all subjects and/or their legal guardian(s). Only anonymized data of donors with written consent for the use of their data for research purposes were included in this study’. All methods were carried out in accordance with relevant guidelines and regulations.
: Not applicable.
: The authors have no competing conflicts of interest to declare.